Cisco IOS 15.3S IPv6-to-IPv4 race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Cisco IOS 15.3S and classified as problematic. The affected element is an unknown function of the component IPv6-to-IPv4 Handler. This manipulation causes race condition. This vulnerability appears as CVE-2015-4199. There is no available exploit.

Detailsinfo

A vulnerability was found in Cisco IOS 15.3S (Router Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown part of the component IPv6-to-IPv4 Handler. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect availability. The summary by CVE is:

Race condition in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (NULL pointer free and module crash) by triggering intermittent connectivity with many IPv6 CPE devices, aka Bug ID CSCug47366.

The weakness was presented 06/27/2015 with Cisco as CSCug47366 as not defined advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2015-4199 since 06/04/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at SecurityFocus (BID 75335†) and Vulnerability Center (SBV-50665†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/04/2015 🔍
06/22/2015 +18 days 🔍
06/22/2015 +0 days 🔍
06/23/2015 +1 days 🔍
06/27/2015 +4 days 🔍
06/27/2015 +0 days 🔍
06/28/2015 +1 days 🔍
05/21/2022 +2519 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCug47366
Organization: Cisco
Status: Not defined

CVE: CVE-2015-4199 (🔍)
GCVE (CVE): GCVE-0-2015-4199
GCVE (VulDB): GCVE-100-76093
SecurityFocus: 75335 - Cisco IOS Software CVE-2015-4199 Denial of Service Vulnerability
SecurityTracker: 1032692
Vulnerability Center: 50665 - Cisco IOS Remote DoS in IPv6 to IPv4 Subsystem, Medium

Entryinfo

Created: 06/28/2015 14:54
Updated: 05/21/2022 22:26
Changes: 06/28/2015 14:54 (57), 07/01/2017 08:04 (4), 05/21/2022 22:26 (3)
Complete: 🔍
Cache ID: 216::103

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